Synonyms|156Antonyms|3|Broader|2Narrower|0Related|79
2
vent(noun, break, opening, channel, passage)
1
loop
1
air hole
1
aperture(noun, break, opening, bow, channel)
1
aperture size(expression, idiom)
1
armhole
1
bay window
1
blowhole
1
bow
1
bow window
1
bowsprit
1
bullet-hole
1
bunghole
1
call to order(expression, idiom)
1
carriage
1
casement window
1
channel
1
cockpit
1
crack
1
cringle
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APASmart Define. (2015). porthole thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/porthole/thesaurus/synonyms
ChicagoSmart Define. 2015. "porthole thesaurus" https://smartdefine.org/porthole/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, porthole thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/porthole/thesaurus/synonyms>.
MLASmart Define. "porthole thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/porthole/thesaurus/synonyms>